First of all, be aware that the above mockup of Ubuntu's Unity interface is unofficial, created by an Ubuntu user, and it has nothing to do with Canonical.

So, if you click the screenshot above, you will be able to see a bunch of Unity mockups that look simple, and simply amazing.

It shows a very nice futuristic login screen where you can see existing users, a new entry in the System Settings panel allowing users to add applets to the Unity Launcher, as well as various configuration options for both Panel and Launcher.

A new search, as well as bottom Unity Launcher are also shown in this concept, and I have to admit that I really want that!

The Unity concept you see above even has a motto: "Everything should be made as simple as possible, but not one bit simpler."